Ok, it was working ok, n last night i tried adding my ps4 to high, saved , it rebooted and then devices couldnt access it. Exept one laptop could still get on, & my xb but it on powerline, i dont know why the laptop could get on wifi but no other devices could, so i called dlink, they said to try changing channel from auto to 11 that didnt work, they got me to update fw to 1.01, didnt fix it eaither. Then restore to factory setting, that fixed it, all devices got on, but i did qos again, reserved ip, this fw makes you type ip , so i typed the ip it showed and xb showed, then put xb to highest again & it stoped working wifi again, but a laptop could access wifi still n xb worked still. But i wasnt even using xb, i dont get why it made devices unable to be on wifi, it worked yesterday ppl got on fine. So after factory reset n put new name & pw for wifi, it worked, devices could access wifi untill i saved qos and it reboots , then devices couldnt get wifi again, laptop could though, i tried moving xb to just high it didnt fix it. Wifi is working now since reset again but theres no qos on. I dont get why it worked yesterday on xb highest. Im scared everytime i try qos it not goona let devices on wifi again n have to factory reset everytime. There must be a fix without having to restore again.